121210111200212 has 6 divisors (see below), whose sum is σ = 212117694600378. Its totient is φ = 60605055600104.

The previous prime is 121210111200107. The next prime is 121210111200253. The reversal of 121210111200212 is 212002111012121.

It can be written as a sum of positive squares in only one way, i.e., 116629329844036 + 4580781356176 = 10799506^2 + 2140276^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15151263900023 + ... + 15151263900030.

It is an arithmetic number, because the mean of its divisors is an integer number (35352949100063).

Almost surely, 2^{121210111200212} is an apocalyptic number.

It is an amenable number.

121210111200212 is a deficient number, since it is larger than the sum of its proper divisors (90907583400166).

121210111200212 is a wasteful number, since it uses less digits than its factorization.

121210111200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30302527800057 (or 30302527800055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121210111200212 its reverse (212002111012121), we get a palindrome (333212222212333).

The spelling of 121210111200212 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred eleven million, two hundred thousand, two hundred twelve".